is there a such thing as making emt/conduit to tight or too flexible? For example some of the stuff I recently put up, after tightening down the straps, you can do chin-ups on it. I put one outlet box on my cement wall of the basement. If you were to unscrew the box from the wall, it would spring back to another position, not level. I had to push it past its normal resting space in order to make it sit level. So in other words, should it all be run perfectly level and plumb where you don't have to force it into place?

I have a single pole circuit out. Breaker isn't tripped. Pulled breaker and reseated it a couple of times (checked with voltmeter, it's working) Neutral on busbar is tight No GFis on the circuit. Pulled all outlets, switches and fixtures on the circuit. No loose wires or wire nuts. Using outlet tester in an outlet results in no lights on the tester coming on. There is 116v leaving the breaker. The romex coming into the breaker panel for this circuit is 12/3 w/ ground. The red wire feeds the circuit that is dead. The black wire feeds another circuit that is working fine. Could the problem be with the neutral on the black wire circuit? Anything else to check? Assuming I have a broken wire in the wall somewhere (covered over j box?), how do I find it? Thanks